Rules glossary
↑ Parent rule: 602.5 A player can’t begin to activate an ability that’s prohibite…
602.5d Activated abilities that read “Activate only as a sorcery” mean the player must follow the timing rules for casting a sorcery spell, though the ability isn’t actually a sorcery. The player doesn’t actually need to have a sorcery card that they could cast.
No sub-rules.